Looking Beyond the Dynatron B13 2U Active CPU Cooler? 6 Alternatives Worth a Look
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You are looking for dynatron b13 2u active CPU cooler alternatives because your server build has specific constraints. The original Seasonic Dynatron B13 fits strictly within a 2U height limit. It measures 2.6 inches in height, 3.15 inches in width, and 4.25 inches in length. This compact active design works well for tight rackmount spaces where vertical clearance is minimal. However, you might need a different socket compatibility or material. Some builds require AMD EPYC SP3 support, while others prefer passive cooling for silence. You may also need a specific fan speed or thermal paste type. We selected these alternatives because their specifications overlap with the original B13. They share the 2U server height requirement and active cooling method. This ensures they fit your chassis while offering variations in socket support or construction. The list covers options for Intel LGA 2011, AMD SP3, and passive solutions. Each product meets the core 2U form factor constraint. You can compare their dimensions and features to find the best match for your hardware. This guide helps you navigate the limited options for 2U server cooling without guessing.
Our top pick: Dynatron 2U Active CPU Cooler.
How Each Alternative Compares
Dynatron 2U Active Aluminum SP3 Heatsink
The Dynatron A26 is designed for AMD EPYC SP3 sockets, whereas the original B13 is a general-purpose cooler. This alternative uses an aluminum heatsink with embedded heatpipes to manage thermal loads for high-end server CPUs. It is slightly larger, measuring 6 inches in height and 4.5 inches in width, compared to the B13’s 2.6-inch height. You should choose this if you are building an AMD EPYC system. It provides dedicated active cooling for Socket SP3. The larger footprint may not fit in extremely tight chassis spaces. However, it offers robust thermal performance for demanding server workloads where the original B13 is not socket-compatible.
Dynatron 2U Active CPU Cooler
This Dynatron B13 model is nearly identical to the original in dimensions, measuring 2.6 inches in height and 3.15 inches in width. It shares the same active cooling method and 2U server height constraint. The key difference is the inclusion of a dual ball bearing fan and pre-applied Shin-Etsu thermal paste. These features may offer longer lifespan and easier installation compared to the base model. It is a dependable choice for users who want a compact 2U unit with enhanced bearing durability. If you require the exact same form factor but prefer a fan with a dual ball bearing design, this is a direct upgrade. It serves the same compact server builds with minor component variations.
Sunydog LGA 2011 2U Active CPU Cooler
The Sunydog cooler is tailored for LGA 2011 sockets, making it suitable for older E5-2600 processor systems. It maintains the 2U server height and active cooling method required by your constraints. This alternative is ideal for users maintaining legacy server hardware that the original B13 does not support. It provides a straightforward cooling solution for specific Intel architectures. The focus is on compatibility with older server platforms rather than modern socket types. If your build involves LGA 2011 processors, this cooler offers the necessary active airflow within the 2U limit. It is a specialized option for system upgrades or replacements in older rackmount environments.
Dynatron B12 2U Passive Aluminum Cooler
The Dynatron B12 is a passive cooler, which means it lacks a fan entirely. This eliminates noise, making it suitable for silent Intel server builds. It measures 3.54 inches in height, which is taller than the B13’s 2.6-inch profile. It is designed for servers that already have strong case airflow to dissipate heat. You should pick this if you prioritize silence over active cooling performance. It relies on aluminum fins for heat transfer. The larger height may not fit in chassis with strict 2.6-inch clearance limits. It is a reliable passive option for Intel systems where noise reduction is critical and airflow is sufficient.
MITXPC Threadripper EPYC Passive 2U Heatsink
The MITXPC heatsink is a passive solution for AMD Threadripper and EPYC SP3 sockets. It fits within a 2.52-inch height, which is slightly lower than the B13’s 2.6-inch limit. This makes it a good fit for quiet, high-end AMD server builds with adequate case airflow. It lacks a fan, relying on passive cooling for thermal management. Choose this if you need compatibility with AMD EPYC or Threadripper processors and value silence. The 2U height constraint is met with a lower profile. It is ideal for users who have the airflow to support passive cooling and require specific AMD socket support.
Goshyda 2U Active LGA2011 Server Heatsink
The Goshyda cooler is an active solution for LGA 2011 Narrow ILM sockets. It features an 8400 RPM fan for high-speed cooling in 2U server racks. This is a targeted thermal solution for Intel Xeon E5-2600 series deployments. It differs from the original B13 by focusing on specific older Intel sockets. The high fan speed provides robust airflow for demanding workloads. It is suitable for users maintaining older server systems with strict 2U clearances. If your build involves LGA 2011 Narrow ILM processors, this cooler offers dedicated active cooling. It is a specialized option for legacy Intel server hardware requiring high-performance active thermal management.
Quick picks
Our 7 picks
Dynatron 2U Active CPU Cooler
Best for: compact 2U rackmount server builds
- Server Height
- 2U
- Cooling Method
- Active
- Dimensions
- 3.15 x 2.6 x 4.25 inches
View on Amazon: Dynatron 2U Active CPU Cooler Affiliate link
This Seasonic 2U active CPU cooler provides dedicated cooling inside compact rackmount enclosures. Measuring 4.25 inches long, 3.15 inches wide, and 2.6 inches tall, it fits standard 2U server height limits where taller heatsinks cannot fit. You get an active cooling setup built directly for CPUs in tight chassis layouts. It suits you if you need a compact, low-profile active air unit specifically tailored for 2U rack server deployments.
Pros
- Fits standard 2U server chassis height
- Active cooling method for dedicated CPU airflow
- Compact height of 2.6 inches
- Small footprint of 4.25 inches by 3.15 inches
Cons
- Specific CPU socket compatibility is not listed in specifications
- Fan airflow and noise ratings are omitted
- Thermal design power handling is unspecified
Good fit if
- You build inside a standard 2U server chassis.
- You need an active CPU cooler with a 2.6-inch clearance height.
- You require a compact cooler footprint of 4.25 by 3.15 inches.
Skip if
- You need verified socket compatibility listed upfront.
- You require a passive heatsink setup for your server.
Verdict: Seasonic 2U Active CPU Cooler provides active CPU airflow within a strict 2.6-inch height designed for 2U chassis limits. Its compact footprint fits tight server builds that require minimal vertical clearance.
Dynatron 2U Active Aluminum SP3 Heatsink
Best for: 2U AMD EPYC Socket SP3 server builds
- Socket Compatibility
- Socket SP3
- Material
- Aluminum
- Server Height
- 2U
- Cooling Method
- Active
- Compatible Device
- AMD EPYC
- Dimensions
- 5 × 4.5 × 6 inches
View on Amazon: Dynatron 2U Active Aluminum SP3 Heatsink Affiliate link
The Dynatron 2U Active AMD EPYC Cooler is a dedicated 2U active server heatsink designed specifically for AMD EPYC processors on Socket SP3. Built with an aluminum fin structure and embedded heatpipes, it delivers direct active cooling in compact rack enclosures. Measuring 5 inches long, 4.5 inches wide, and 6 inches tall, it weighs 1 pound. It suits you if you run AMD SP3 rackmount setups.
Pros
- Built for 2U server chassis height
- Embedded heatpipe design with aluminum fins
- Active cooling configuration
- Native compatibility with AMD EPYC Socket SP3
Cons
- Limited strictly to AMD Socket SP3 motherboards
- Does not support Intel or desktop sockets
Good fit if
- You run AMD EPYC processors on Socket SP3 motherboards.
- You need an active cooler built for 2U server enclosures.
Skip if
- You use Intel platforms or consumer AMD sockets.
- You require a passive heatsink for chassis-ducted airflow.
Verdict: Dynatron 2U Active AMD EPYC Cooler provides dedicated active cooling and embedded heatpipes for 2U Socket SP3 server builds. It delivers an aluminum form factor tailored strictly for AMD EPYC systems.
Dynatron 2U Active CPU Cooler
Best for: compact 2U server rack active cooling
- Material
- Aluminum Heatsink with Heatpipe
- Server Height
- 2U
- Cooling Method
- Active
- Fan Size
- 60mm
- Dimensions
- 4.25 × 3.15 × 2.6 inches
- Weight
- 1 pounds
View on Amazon: Dynatron 2U Active CPU Cooler Affiliate link
This Dynatron cooler fits standard 2U server chassis and provides active cooling using an aluminum heatsink with an embedded heatpipe. It includes a 60mm dual ball bearing fan and comes with Shin-Etsu 7762 thermal compound pre-applied on the base. Measuring 2.6 inches tall and 4.25 inches long, it suits you if your server rack enclosure requires a compact active cooler designed specifically for 2U clearance limits.
Pros
- Aluminum heatsink with embedded heatpipe
- Dual ball bearing 60mm fan
- Pre-printed Shin-Etsu 7762 thermal compound
- Compact 2.6-inch height engineered for 2U servers
Cons
- Small 60mm fan format
- Supported CPU sockets not specified in manufacturer data
Good fit if
- You need an active cooler with a 2.6-inch height profile for a 2U chassis.
- You want pre-printed Shin-Etsu 7762 compound ready on the heatsink.
Skip if
- You require a passive heatsink setup for fanless 2U enclosures.
- You need a cooling unit that uses fan sizes larger than 60mm.
Verdict: Dynatron 2U Active Heatpipe CPU Cooler delivers dedicated 2U active cooling with its embedded heatpipe design and pre-applied Shin-Etsu thermal paste. It is a dependable choice when you need a compact 2.6-inch unit with a dual ball bearing fan.
Sunydog LGA 2011 2U Active CPU Cooler
Best for: LGA 2011 server maintenance and upgrades
- Socket Compatibility
- LGA2011
- Server Height
- 2U
- Cooling Method
- Active
- Fan Size
- 8400 RPM
View on Amazon: Sunydog LGA 2011 2U Active CPU Cooler Affiliate link
This Sunydog cooler is a 2U active heatsink built for Socket LGA 2011. It uses a fan spinning at 8400 RPM to move heat away from the processor. The design fits E5-2600 series processors, including v2 and v3 models. It comes with tools for DIY installation. The compact size allows for easy storage and transport. You should consider this if you need reliable cooling for older server hardware.
Pros
- High fan speed of 8400 RPM for fast heat dissipation
- Compatible with E5-2600 series, v2, and v3 processors
- Includes all necessary tools for DIY installation
- Compact and portable design for easy storage
Cons
- Limited to Socket LGA 2011 compatibility
- No mention of noise level or acoustic performance
- Specific model number not clearly identified in data
Good fit if
- You use an LGA 2011 socket processor
- You need a 2U active cooling solution
- You prefer DIY installation with included tools
Skip if
- You use a modern LGA 1700 or AM5 socket
- You require silent operation below standard noise levels
- You need compatibility with E5-2600 v4 series
Verdict: Sunydog LGA 2011 2U Active CPU Cooler is a solid choice for users maintaining older server systems with E5-2600 processors who need a straightforward, high-speed cooling solution.
Dynatron B12 2U Passive Aluminum Cooler
Best for: Silent Intel server cooling
- Server Height
- 2U
- Cooling Method
- Passive
- Dimensions
- 2.52 x 3.54 x 3.54 inches
- Weight
- 1.3 pounds
View on Amazon: Dynatron B12 2U Passive Aluminum Cooler Affiliate link
The Dynatron B12 is a passive 2U server CPU cooler designed for Intel processors. It uses an aluminum heatsink with an embedded copper base and heatpipes for heat transfer. The unit measures 90 x 90 x 64 mm and weighs 1.3 pounds. This compact, RoHS-compliant design suits systems requiring silent, maintenance-free cooling without active fans.
Pros
- Passive cooling eliminates fan noise and moving parts
- Copper base with embedded heatpipes for efficient heat dissipation
- Compact 2U form factor fits standard server racks
Cons
- Passive design requires strong case airflow to work
- Limited to Intel socket support only
- No included fan for active cooling assistance
Good fit if
- You need silent cooling for an Intel server
- You have a chassis with high airflow
- You want a low-profile 2U heatsink
Skip if
- You use AMD Threadripper or EPYC
- You need active fan cooling
- You require a larger surface area
Verdict: Dynatron B12 2U Passive Aluminum Cooler fits Intel-based 2U servers that already have strong airflow. It offers reliable passive cooling without the noise of a fan.
MITXPC Threadripper EPYC Passive 2U Heatsink
Best for: Quiet AMD Threadripper and EPYC servers
- Socket Compatibility
- sTRX4, TR4, SP3
- Material
- Aluminum, Heatpipes
- Server Height
- 2U
- Cooling Method
- Passive
- Dimensions
- 4.45" x 3.15" x 2.52"
- System Type
- Server
View on Amazon: MITXPC Threadripper EPYC Passive 2U Heatsink Affiliate link
This passive 2U server heatsink is built for AMD Threadripper and EPYC processors. It handles up to 180 watts of heat dissipation using an aluminum base, stacked fins, and embedded heatpipes. The unit comes with pre-applied Shin-Etsu 7762 thermal paste to simplify installation. Its compact dimensions of 4.45 x 3.15 x 2.52 inches fit standard 2U server chassis. You need a system fan to push air through the fins for effective cooling.
Pros
- Supports AMD Threadripper (sTRX4, TR4) and EPYC (SP3) sockets
- Passive design eliminates fan noise and failure points
- Includes pre-applied Shin-Etsu 7762 thermal paste
- Aluminum base with heatpipes for efficient heat transfer
Cons
- Passive cooling requires adequate case airflow to work
- Limited to 180 watts thermal design power
- No included fan or active cooling components
Good fit if
- You are building a quiet AMD Threadripper or EPYC server
- You have a chassis with strong forced airflow
- You prefer passive cooling for reliability
Skip if
- You need to cool a CPU above 180 watts
- Your case lacks sufficient airflow for passive cooling
- You are using an Intel or non-EPYC AMD socket
Verdict: MITXPC Threadripper EPYC Passive 2U Heatsink is a solid choice for quiet, high-end AMD server builds. It fits users who value reliability and have the airflow to support passive cooling.
Goshyda 2U Active LGA2011 Server Heatsink
Best for: 2U servers with LGA2011 Narrow ILM sockets
- Socket Compatibility
- Socket LGA2011 /Narrow ILM
- Server Height
- 2U
- Cooling Method
- Active
- Compatible Device
- Xeon processor E5 2600 series
- Features
- Fan
- Dimensions
- 0.39 × 0.39 × 0.39 inches
View on Amazon: Goshyda 2U Active LGA2011 Server Heatsink Affiliate link
The Goshyda 2U LGA2011 Narrow ILM Active Cooler is an active server heatsink designed for 2U chassis installations. It features a high-speed fan running at up to 8400 RPM for focused heat dissipation. This cooler matches Intel Xeon E5-2600, E5-2600 v2, and E5-2600 v3 series processors on LGA2011 narrow ILM motherboards. If you need a compact cooler for compatible server hardware, this unit provides the required socket mounting.
Pros
- High-speed 8400 RPM cooling fan
- Fits Socket LGA2011 Narrow ILM motherboards
- Compatible with Xeon E5-2600, v2, and v3 series processors
- Compact 2U server height profile
Cons
- Limited exclusively to LGA2011 Narrow ILM mounting
- 8400 RPM fan speed generates significant acoustic output
- Lacks support for standard consumer desktop sockets
Good fit if
- You run a 2U server rack utilizing Socket LGA2011 Narrow ILM motherboards.
- You use Intel Xeon E5-2600, v2, or v3 series processors.
- You need an active cooling fan capable of running at 8400 RPM.
Skip if
- You have a Square ILM LGA2011 motherboard or modern socket platform.
- You require low-noise cooling for an office or desktop environment.
Verdict: Goshyda 2U LGA2011 Narrow ILM Active Cooler delivers targeted active cooling with an 8400 RPM fan specifically for LGA2011 Narrow ILM server racks. It serves as a dedicated thermal solution for Intel Xeon E5-2600 series deployments requiring strict 2U clearances.
Specifications side by side
| Spec | Dynatron 2U Active CPU Cooler | Dynatron 2U Active Aluminum SP3 Heatsink | Dynatron 2U Active CPU Cooler | Sunydog LGA 2011 2U Active CPU Cooler | Dynatron B12 2U Passive Aluminum Cooler | MITXPC Threadripper EPYC Passive 2U Heatsink | Goshyda 2U Active LGA2011 Server Heatsink |
|---|---|---|---|---|---|---|---|
| Socket Compatibility | not stated | Socket SP3 | not stated | LGA2011 | not stated | sTRX4, TR4, SP3 | Socket LGA2011 /Narrow ILM |
| Material | not stated | Aluminum | Aluminum Heatsink with Heatpipe | not stated | not stated | Aluminum, Heatpipes | not stated |
| Server Height | 2U | 2U | 2U | 2U | 2U | 2U | 2U |
| Cooling Method | Active | Active | Active | Active | Passive | Passive | Active |
| Compatible Device | not stated | AMD EPYC | not stated | not stated | not stated | not stated | Xeon processor E5 2600 series |
| Fan Size | not stated | not stated | 60mm | 8400 RPM | not stated | not stated | not stated |
| Dimensions | 3.15 x 2.6 x 4.25 inches | not stated | not stated | not stated | 2.52 x 3.54 x 3.54 inches | 4.45" x 3.15" x 2.52" | not stated |
| System Type | not stated | not stated | not stated | not stated | not stated | Server | not stated |
| Features | not stated | not stated | not stated | not stated | not stated | not stated | Fan |
| Weight | not stated | 1 pounds | 1 pounds | not stated | 1.3 pounds | not stated | not stated |
| Color | Multicolor | not stated | not stated | not stated | not stated | not stated | default |
| Model | B13 | A26 | B13 | Sunydog3elo2w9gdj | 8541602256 | not stated | GOSHYDAsehw4gia2n154 |
If you need exact chassis dimensions, you can compare clearance specifications in the best PC cases for CPU Cooler.
Frequently asked questions
Which Dynatron cooler is best for AMD EPYC SP3?
The Dynatron A26 is the best budget choice for Socket SP3 builds. It features an aluminum heatsink with embedded heatpipes tailored for AMD EPYC systems. This cooler measures 6 inches in height and 5 inches in length. It weighs 1 pound and provides active cooling specifically designed for these high-end server processors.
What is the difference between the Seasonic and Dynatron B13?
Both coolers share the same B13 model designation and dimensions. They measure 2.6 inches in height, 3.15 inches in width, and 4.25 inches in length. The Seasonic version is positioned as the best overall option. The Dynatron B13 is labeled as the best premium choice and includes pre-applied Shin-Etsu thermal paste.
Is there a passive option for Intel 2U servers?
Yes, the Dynatron B12 is a passive aluminum cooler for Intel-based 2U servers. It measures 3.54 inches in length and width, with a height of 3.54 inches. This unit weighs 1.3 pounds. It relies on existing server airflow rather than a fan, making it suitable for silent operation in compatible rackmount chassis.
Can I use a cooler for LGA 2011 Narrow ILM?
The Goshyda 2U Active LGA2011 Cooler targets Narrow ILM sockets. It includes an 8400 RPM fan for active cooling. This solution is designed for Intel Xeon E5-2600 series deployments. It ensures strict 2U clearances are met while providing targeted thermal management for older server systems requiring high-speed fan performance.
Which cooler is best for quiet AMD Threadripper builds?
The MITXPC Threadripper EPYC Passive 2U Heatsink is the best server option for quiet builds. It supports Socket SP3 and uses passive cooling. The unit measures 2.52 inches in height, 3.15 inches in width, and 4.45 inches in length. It is ideal for users who have sufficient airflow to support heat dissipation without fans.
What are the dimensions of the Sunydog LGA 2011 cooler?
The Sunydog LGA 2011 2U Active CPU Cooler is designed for E5-2600 processors. It provides straightforward active cooling for older server systems. Specific width, height, and length measurements are not listed in the provided data. It maintains the standard 2U server height requirement for rackmount compatibility.
Does the Dynatron B13 come with thermal paste?
The Dynatron B13 premium model includes pre-applied Shin-Etsu thermal paste. This ensures direct contact between the heatsink and CPU. The Seasonic B13 version does not explicitly list thermal paste in its attributes. Both units share the same compact 2.6-inch height and active cooling method for 2U chassis limits.